Eh, I swim in it all the time. I remember one instance a few years ago when it was an unseasonably warm day in mid March (in the 70s) and so me and some friends from my water polo team decided to head down to the lake and go for a swim. Needless to say, that wasn't the brightest idea we've ever had, but it was a blast none the less.
But y'all are right, that thing never really manages to get all that warm. That's why you never take a chick to the beach, unless you're not planning on swimming
